Propel pencil



W. M. SAUNDERS PROPEL PENCIL Filed Sept. 2. 1921 Patented Dee. 18, 1923.

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WILLIAM M'. SAUNDERS, 0F WATERBURYI,

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MANUFACTURING COMPANY, OF NEW YORK, N. Y., A GORPORAVTION 01? NEW YORK.-

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' Application led September 2, 1921. Serial No. 497,332.

To all lw'zom it concern.' e

Be it known that l', WrLLIAiu M. SAUN- DERS, a citizen of the United States, residing at Waterbury, county of New Haven, State of Connecticut, have invented certain new and useful Improvements in Propel Pencils, of whichthe following is a full, clear, and exact description.

The present invention relates pencils, novel and improved pencil of this character which is simple, cheap and durable in construction, and reliable and efficient in operation. l*

The several features of the invention will be clearly understood from the following de,- scription and accompanying drawings, in which:

to propel Figure 1 is'a longitudinal sectional view,

partly in elevatomof a pencil embodying the features in their preferred form; v

Fig. 2 is a similar view on an enlarged scale of portions `of the pencil;

Figs. 3, 4, 5 and 6 are sectional views taken on the lines 3 3, 4 4, 5 5 and 6 6 of Fig. 2, respectively; l Y

Fig. 7 is a detailside elevation ofv a tubular casing for the pencil lead propeller; and

Fig. 8 is a detail side elevation of 'a portion of the lead propelling mechanism, with the [parts separated.

The body of the pencil as illustrated in the drawings 'is provided with a cylindrical casing 2 and a tip 4,. having. aswivel connection between them to enable the casing and tip to be rotated relatively. vThe swivel connection comprises an elongated bushing 6 secured in the the lower or forward end portion of the casing, the extreme forward end of the casing being 4turned inwardly to provide a 'ange 8 engaging the forward end of the bushing 6 to assist in securing the bushing in the casing. Spaced bushings 10 and 12 are secured in said bushing 6 with .the bushing 10, spaced from the forward end thereofand with the rear end of the bushing 12 engaging an inwardly extending flange 14 formed on the rear end of the bushing 6. A nut 16 is arranged between the bushings 10 and 12 and is held from longitudinal movement by engagement with the opposite ends of the bushings, but is-free to be rotated with relation to the bushings. The nut 16 is provided with a forwardly extending and has for its object to provide a.

sleevebearing .18 which extends into and is secured to the rear and arranged for rotation within the bushing 10and the forward end ofthe sleeve 18 ofthe/ nut is turned outwardly to engage a shoulder 22 formed in the bushing 20 to assist in securing the bushing and nut together. The bushing is provided withV a shoulder.24 arranged adjacent the forward end of the bushing 10 and is provided with a peripheral portion 26 which forms a bearing for the portion of the bushing 6 extending between its forward end and the forward end .of the bushing l0. The bushing 20 constitutes the tip member of the swivel connection and its forward end portion extends into and is secured to the rear end portion of fthe tip, the rear end of the tip being turnedinwardly to vprovide a liange 2,8 that engages a shoulder formed on the bushing 20 toassist in securing the bushing and tip together., ln order to take care of any looseness of parts of the swivel connection caused by wear and also to place a certain amount of frictional drag on the relatively movable parts of the swivel connection, a spring washer 30 is arranged on the rear reduced portion of the bushing 20 and is positioned between the rear Iend of the bushing 10 and the shoulder 24 on the bushing 20. From the 'foregoing it will be apparent that the parts of the swivel connection may be easily asseinbled, that they are of simple and durable construction and not liable to get out of order.

To guide the lead through the tip, a

lead guiding tube 32 is provided, the for. ward en/d of which engages the forward eny of the tapering wall of the tip and the rear end portion of which is secured in the sleeve 18 of the nut 16. Thenut 16 `is provided with an axial aperture through which a screw-threaded follower or pencil lead propelling screw 34 is screw threaded. rllhe rear end of the propeller screw 34 is provided with a laterally extending tongue 36 which engages an elongated slot 38 in a tubular casing 40, the forward end of which is secured in the bushing 12. With this construction it will be apparent that by rel-- atively rotating the casing 2 and the tip 4 of the pencil thel propeller screw 34 may be advanced vand retracted as desired.

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'portion of a bushing 20.' This portion of the bushing 20 isreduced which `will eirtend 'into V`nut lin case the` screw vthe -user in case they In order that the propeller screw 34 shall not become disengaged from the nutv'by excessive relative -rotation of the nut and screw, the forward end 'ofthe propeller screw isprovidedwitli a reduced portion `42 i the aperture of the threaded' portion of the propeller screw should be retracted from the nut.v Also, in order to insure that the "threads ,of the propeller screw and the nut may be properly engaged upon relative rotation of'the casing' and the tip 4 by should become disengaged by an excessive rotation of the nut and ,screw a. coiled spring 44 is arranged in the propeller screw casin 40 which acts as a yielding abutment foi t e propeller screw l n ear,the endof its retracting movement and [when thllsengaged tends to urge the propeller In the' screw-through the nut.

illustrated construction means is provided; for" preventing lead from being iaminedpback and .forcing the end 42 of the propeller screwout ofthe'nut when the pro- .pellerscrewhasbeen retracted so that the propellerfscrew could not be again. effectively operated 'without first removing the 'excess'.of leadl- 'This means comprises a de- .tagc'lialole' head-46 .having a bodyA portion in sliding 'engagement with the lead* guiding tube 32A and' .having a rearwardly rAextending portion ini tlie4 form Aof a splitsleeve-adapted to fricti'oinilly` gri the reduced endportion42 of the prope ler. 'The "headisalso 4provided with-.a reduced forward e'nd portion 48 for engagement. with the lead',

.Withrt'hisconstruction it willbe apparent vthat it would be quite' impossible to render v tliepropeller screw inoperative by forcing' lead. into vthey lead guiding tube.. A's the head-46de frictionally secured t`o the propeller screw, it will by 'engagement'with- .the nutco-operate with the coiled spring 44 to yieldinglylimit .theretractin movementof .By t us yieldingly limiting the. retractingi movement of the ropeller screw,

no danger'lof arts ofthe-'pencil being'in- Juiedebyfoicefuturning of .the ca'si'g 2 and -tip- 4 after 'the propeller ."screw 'has been retracted'.

. While' it isfp feriedto employ the specifc. construction .andai-rangement fpai'ts illustrated'fand,describeds it 'is' to be understood; that this construction andf arrangement .is not-essential except so fares-specil fied in the claims;

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What .I clanilm 1; pencil '.of tlieclass. described having upperaid lower` .A relatively-rotatable parts, the lower part comprisinga screwfthreaded nut -1pbrtion'frotatipig therewith, in 'combinaf i tion; with? ascrewethread'd,follower ngagbeing withdrawal. nmf perativ tengas@ it will be apparent that t ere Y portions and ladjacent y first 'portion and part. aiidoperaitivelyvconnected thereto so as to rotate therewith, anda l yielding abutnientl carried by said upper Ipart and ar rangd to be com'prssd'by Said follQwef as it approaches its upward liiit of movement land thereupon to urge said follower toward operative engagement with said nut.

2. pencil of the class described having, in combination, a body, a tip, (io-operating members constituting a swiveli connection between the body and tip to enable the body and tip to' be rotated relatively, a 'spring interposed between said co-operating meinbers to compensate for any looseness of parts in said .swivel connection, and a propeller 'arran' .edfo'r advancing movement to feed the pencil lead through the tip on relative rotation of said body and tip inone direction.

B.. In' a-propel 4pencil the combination of a casing'l comprising a body portion anda tip .portionl having their inner ends juXtaposed', a bushingfixed within one of said portions and adjacenttoy theinner end thereof, 'a` follower carrier secured to said bushing, a second bushing, the saine being located within the inner end of the other having an extensionv of 'said portions .and entering the inner end of said first portion and free to turn therein, said extension having a reduced portionforming a shoulder spaced from its end and a lateral projection .adjacent to its end, said shoulder and projection' constituting? abutments,

a sleeve said abutments and the said inner end of said said extension having an ina casin` coin'prisin'g la'body portion and a tip 'portion having theirinner ends juXta posed, 'a' bu l to the inner end thereof, a follower carrier secured to said bushing, a second bushing, the saine being locatedwithi'ii th'e vinner end of the other of sa1d`-portions` and having an extension entering the inner en'd of said lirst portion and freeto turn therein, said extension having l'a reduced pprtin forming a shoulder spaced fro'm" t's'lend and a 'lateral projection' adsaid shoulder and projectioiijconstitutiiig abutments, va'sleev'e loosely mounted-between said' anni-ments and held iXedwithin-thesaid inner end of said iirst portion saidextension 'having an internally tlire'aded aperture'at thel end within said a screw-threaded 'follower'en'ga'ging the-screw tlir'ead of'said aper- 'hingixed within one of 'said' armena ture and having a slidin engagement with said follower carrier, an a spring between said sleeve and one of said abutments.

5. In a propel pencil the combination of a casing comprising a body portion and a tip portion having their inner ends juxtaposed, a bushing fixed Within one of said portions `and adjacent to the inner vend.

thereof, al follower carrier secured 'to'said bushing, a second bushing, the same bein located within the inner end of the other of said portions and having an extension entering the inner end of said rstportion and free to turn therein, said extension havinfr a reduced portion forming a shoulder spaced from its end and a lateral projection.

adjacent to its end, said shoulder and projection constituting abutments, a sleeve loosely mounted between said abutments and held fixed within the said vinner end of said first ortiOn, said extension having an in terna y threaded aperture at the end within said first portion, and a screw-threaded follower engaging the screw thread of said aperture and having a sliding engagement with said follower carriergand a third bushing within the inner end fof said first portionand with which said first bushing and sleeve -make binding engagement.

6. A pencil of the class described having,

in combination, a lead guide, a support therefor, a nut xed relatlvely to said support, a follower having a screw-threaded 'portion adapted to make engagement with said nut and adapted by rotation to be projected into and withdrawn from said nut and guide, a member slidin Within said guide and movable indepen ently of said follower, said member acting to separate a lead within said guide from said propeller and its nut, and means for rotating said propeller relatively to said nut so as to advance and retract the same.

7. A pencil of the class described having, in combination, a casing comprising two relatively,7 rotatable parts, a nut secured to one of said parts to rotate therewith and provided with a screw threaded 'axial aperture, a propeller connected with the other of said parts and screw threaded-through said axial aperture, a lead5 iding tube into which the propeller is a apted to extend,an,d a member'detachably secured to the forward end of the propeller, arranged to slide in said lead guiding tube and interpo'Sed between the forward end of the propeller and thev lead. WILLIAM M. SAUNDERS. 

